SRTA vs VHC: Correlation
How closely do Strata Critical Medical, Inc. (SRTA) and VirnetX Holding Corp (VHC) trade together? Their weekly returns over three years give a correlation of 0.31, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SRTA and VHC?
On 3 years of weekly data the SRTA/VHC correlation comes out at 0.31, moderate. Little has changed lately, as the 1-year reading of 0.21 lands near the 3-year figure. The 5-year figure is 0.32, and annualized covariance runs at 2273.0 %².
Out of 11 assets tracked against SRTA, VHC lands near the bottom at #8. Their recent paths diverged sharply: over the last 12 months SRTA outperformed by 43.5 percentage points (+34.7% for SRTA against -8.8% for VHC).
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
SRTA vs VHC: side by side
| SRTA (Strata Critical Medical, Inc.) | VHC (VirnetX Holding Corp) | |
|---|---|---|
| 1-year return | +34.7% | -8.8% |
| 5-year return | -28.6% | -57.1% |
| Volatility (ann.) | 69.8% | 104.0% |
| Beta vs S&P 500 | 2.02 | 1.09 |
| Max drawdown (3Y) | -48.9% | -60.7% |
| Market cap | $0.5B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SRTA | VHC |
|---|---|---|
| 2022 | -59.5% | -50.0% |
| 2023 | -1.4% | -21.3% |
| 2024 | +20.4% | +12.1% |
| 2025 | +13.2% | +112.6% |
| 2026 | +28.3% | -25.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SRTA and VHC good diversifiers for each other?
A fair diversifier. At 0.31, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between SRTA and VHC?
The SRTA/VHC correlation stands at 0.31 on a 3-year window (1 year: 0.21, 5 years: 0.32), computed from weekly returns as of 2026-08-27.
Is VHC a good diversifier for SRTA?
A fair diversifier. At 0.31, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.31 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/srta-vs-vhc.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/srta-vs-vhc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SRTA correlations · VHC correlations
